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the front sensor will control more of how the engine runs and what type of crap will come out the tail pipe. The cats and stuff downstream are supposed to burn that crap into something that will pass the sniffer test. I would put your stock parts back on and reflash to stock. drive around a while and set all the monitors. then go, if it doesnt work out for you, then maybe look into buying new sensors/etc...

the front sensor will control more of how the engine runs and what type of crap will come out the tail pipe. The cats and stuff downstream are supposed to burn that crap into something that will pass the sniffer test. I would put your stock parts back on and reflash to stock. drive around a while and set all the monitors. then go, if it doesnt work out for you, then maybe look into buying new sensors/etc...

Exactly what im doing right now. I looked into new O2 sensors and they run around 150each, so that for sure is a last resort. I just bought some new downpipe gaskets from subaru and am going to put the oem downpipe on right after i have some lunch. Then i will put it in stock mode and drive around on the highway for a while.

How long do i have to drive around before doing the retest exactly? anybody know?

It doesn't really matter if you are gonna pass the OBD test or not because they will test your car on the rollers since you failed the first time. Your ecu should adjust to the new settings with a half hour of mixed driving.

I removed my Cobb catted downpipe and put on the stock STI one on the weekend, and then switched it to stock mode on the accessport and drove it around for the weekend. Actually passed with flying colours. I am a very very happy camper right now. Thanks all for the help and input. This was defiantly a learning experience on my part. I really shot myself in the foot by reseting my computer to fuel economy mode before I went in the first time. Hopefully somebody who doesnt know reads this thread and doesnt do that, they can save themselves the driving test.

Oh ya, and they DID make me do a driving test again this time (because i failed the OBD test the first time) even though i passed the OBD this time.

ps. Cobb downpipe will be up for sale in the sales section im gonna keep it at stage 1 for a while.

Thanks! Ya im really really happy actually. I had the same guy test me twice! haha. Im pretty sure he thought I was gonna fail again! I was nervous for it (I felt like I was in the interrogation room! haha).

The current testing contract with Envirotest Canada to provide light-duty vehicle emissions testing in this region runs until December 31, 2011. The Province has not made a decision on the future of light-duty vehicle emissions testing beyond 2011. In 2009 - 2010, the Province is scheduled to review the performance of AirCare and determine if automobile emissions remain a significant contributor to the air quality in this region and, if so, the most suitable program model for the future.

Ya seriously, to me it seems more like a money grab than anything else right now. Most of the vehicles that were bad (older cars) are broken down and off the roads now. Its mostly newer vehicles with better emission standards out of the box thus they pass with flying colours. Not to mention that if your OBD is working and your 2001 or greater I think, they don't even test your exhaust emissions and you can just drive through after you pass OBD. If they do catch people like me (haha) then all I do is make it pass for a few dollars and then switch it back to the way it was when I pass. Its more of a pain in the ass than anything. Meh, at least im through